2型糖尿病における角膜神経指標、眼表面の完全性、および腎機能との関連性
Chang Liu1, Hong Chang Tan2, Mingyi Yu1
1Regenerative Therapy Group, Singapore Eye Research Institute, Singapore.
Ophthalmology science
|January 26, 2026
まとめ
糖尿病性腎臓病(DKD)は、角膜神経と眼表面の変化に関連している。角膜神経の障害はDKDのリスク増加を示唆し、DKD患者における角膜神経障害のスクリーニングの必要性を示唆する。
科学分野:
- 眼科学
- 腎臓病学
- 糖尿病学
背景:
- 糖尿病は複数の臓器に影響を与える全身性疾患である。
- 糖尿病性腎臓病(DKD)は糖尿病の主要な合併症であり、罹患率と死亡率の著しい原因となる。
- 眼表面および角膜神経は糖尿病によって影響を受ける可能性があるが、DKDとの関連は十分に理解されていない。
研究 の 目的:
- 2型糖尿病患者における角膜神経、眼表面特性、および腎機能との関連性を調査すること。
- 慢性糖尿病性腎臓病(DKD)を有する糖尿病患者と有しない患者の間でこれらのパラメータを比較すること。
主な方法:
- 2型糖尿病患者538人を対象とした横断研究。
- 評価には、腎機能検査、角膜神経および上皮細胞の生体共焦点顕微鏡検査、および眼表面評価が含まれた。
- 腎機能およびDKDとの関連を決定するために、回帰モデルを含む統計解析が使用された。
主要な成果:
- 低い角膜神経線維密度(CNFD)および増加した神経線維幅は、高い尿中アルブミンおよびアルブミン/クレアチニン比と関連していた。
- 角膜神経線維長および幅はDKDと有意に関連していた。
- DKDを有する患者は、CNFD、長さ、面積、フラクタル次元の低下、および幅の増加、上皮細胞特性の変化、および眼表面パラメータ(例:涙液層安定性の低下、染色増加)の悪化を示した。
結論:
- 糖尿病における角膜神経障害は、腎機能の悪化と関連している。
- 角膜神経の状態不良は、DKDの発症の危険因子である。
- DKDと診断された糖尿病患者は、角膜神経障害について評価されるべきである。
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